Stage introduction: "Song of Everlasting Regret" takes Lishan Mountain as the background, Huaqing Pond and Jiulong Lake as the stage, and uses pavilions, pavilions, corridors, halls, weeping willows and lakes as dance elements. It uses world-leading high-tech means to create a Different stage effects. It organically blends history and reality, nature and culture, the human world and the fairy world, tradition and fashion, interpreting a magical historical movement and creating an outstanding artistic model.